123731266507 has 8 divisors (see below), whose sum is σ = 126566813696. Its totient is φ = 120924802152.

The previous prime is 123731266493. The next prime is 123731266517. The reversal of 123731266507 is 705662137321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123731266507 - 2²⁷ = 123597048779 is a prime.

It is a super-2 number, since 2×123731266507² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123731266517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7262103 + ... + 7279120.

It is an arithmetic number, because the mean of its divisors is an integer number (15820851712).

Almost surely, 2^123731266507 is an apocalyptic number.

123731266507 is a deficient number, since it is larger than the sum of its proper divisors (2835547189).

123731266507 is a wasteful number, since it uses less digits than its factorization.

123731266507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14541417.

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 123731266507 in words is "one hundred twenty-three billion, seven hundred thirty-one million, two hundred sixty-six thousand, five hundred seven".